Gas burner



`une 16, 1925'.

C.. HARTMANN GAS BURNER Filed July 15. 1924 2 Sheets-Sheet Il nr"- m "*Illlil June 16, 1925.V

c. HARTMANN GAS BURNER Filed July l5 1924 2` Sheets-Sheet 2 M l' www3@ /fwffvra CARL HARTJAN.

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Patented June 16, 1 925.

UNITED STATES PATENT OFFICE.'

CARL HARTMANN, 0F SAN FRANCISCO, CALIFORNIA.

GAS BURNER.

Application led July 15, 1924. Serial No. A726,137'.

'Myinvention relates to improvements in :i gas burner foiheating apparatus and par- -ticularly to animproved burner adapted to -luirn gasV di reetly without a. previous admiX'- ture withair. 'lhe priii'iary object of my invention is to provide animproved gas burner.`

Another object is toprovide an improved burner vadapted to givea very high: degree of heat.I l Y A further object is to provide a burner arranged to burn gas Without a previous adniixture withl air to obtain a higher degree of' elicienoy from the fuel consumed and to prevent flare back from the burner toan air mixing chamber such asvlieretofore commonly used. l i

uotlicr objecty is to provide an improved burner provided with va'retl'eotor element adapted to form an air passage tofadntlt air around and over the burner and to Lreflect heat from below the burner upwardly to an element to be heated.

w A further object is to provide an iinprox'cd device ol" the character described provided with improved lighting` means adapted to .prevent the tuiin'gxonofther I accomplish these and `otheroliijegis"by nieans of the device disclosed in the "wraiviiigs forming a part ofthev presentfspecitieation wherein like characters of reference are used to designate similar parts throughout said specification and drawings Aand in which,

Fig. l is a broken side elevation, partlyl in-section. of my improved-.burner as applied for use in connection with a water heater. i 7 Fig. 2 is a plan view of the burner. Fig. valve fittings. f i

Referring to the drawings, `the numeral l is used to designate in general a burner consisting of a plurality of tubular hui-ner arms "l earliy provided with a plurality of restricted apertures 3'. The arms 2- are connected to a common central supply pipe 4 il is a broken side elevation otytliel connected through a suitable control valve '(3 to a source of gas supply', notl shown. rl'hr` arms Q :ire closed at their outer ends.. :in-'l are made arcuate in shape so as to obtain a maximum `lengt-li of tube and a niaxin'ium number oi burner aperturesl confined withina relatively 'sniall areaf 'I 'A 'ring is mounted around theburner vl by meansl of supporting arnis'S e'arried `hy f a collar i!) mounted upoiifthe supply .pipe

4l in connection with then-valve 6.," said ring being` provided with an" annular' shoulder l 11..'l arranged to receive andl form a support foran element to be heated byfthe burner. y In Fig. 1l of itheidrawings I have illustrated v the burner in connection with a Water heater of conventional type wherein a water circulating coil l2 is enclosed above the burner 1 byv means of' aliousing 13` resting Vupon ytheshoulder llof the ring 7. z

concaveV reflector 14 ismounted upon the-{supply.pipe 4 immediately below the burneigf'the tedge ot'` said reflector being spaced sliglitlybelow the lower edgeI of the ringto. form an air passage 1.6 therebetween yvvlierr/by airmay he admitted around the burner 1. i 'g A pilot burner 17 is mounted adjacent, the burner. 1, said pilotl burner opening immediately above theA burner arms 2 and being connected to the supply'pipe 4 through a tubular member 1S arid a vaflve 19 tapped intotlieside of theliousing of the valve 6 in communication with" gas supply thereto.

fuel supply when the*ligrhtingIngang. The valve lQfis provided with an actuating closed.

leverl wherebyv the valvemay be operated '.togcontrolthe hvsupply of gas to the pilot A',bur'ner",175'said lever being arranged 'linmedi'atelyellielovv a lever 22 provided upon the valve Gwliereby said valve 6 may be 'op `erated-to'control ,the supply of gas to t e rmain burner 1. The lever 2l is arranged to cross under the leverQQ at substantially right anglesiv ien the valve 19 'is iii-closed position sojthattlie lever 2;? cannot. he. :operated to openthe jvalve 6 until the valve t9 has heen opened;` 1 ll'hen the' valve ,t9 is opened to permit. fthe. lighting of the pilot burner` the lever Q.lfis moved-from under the lever 22 thereby permitting free operation of the main valve 6. This arrangement insures `lthat the pilotvalve. will lie open and the pilot burner presumably lighted before the main burner can be. turned on, in ,this manner insuring the immediate lighting of the burner whenthevalve 6 is'opened and preventing the escape' of gas and also preventdue to the tardy igniting of valve 6 be opened when the pilot burner is shut oft'.

It will he noted that the burner is con`- necteil to the source of gas supply through closed connections so `that gas-is supplied to the burner arms 2 directly without being first mixed with air as has heretofore been the common practice. The gasainder the normal suppl pressure is thus allowedl to issue through t c apertures 3" in its ,pure state. The apertures B are made very smallso that i the gas will issue in a very smalldstream at a relatively high velocit-y and burn as along thin flame at very high temperature. As the gasa burns above the burner l, airis drawn in through the air passage 16 to combine with thegas and support the combustion so that the gas will be completely burned. The rcstricted area of the aperture 3 is an important feature of the structure as by thisl means a long blue flame .is produced from each ot the apertures 3, whereas a larger opening, such as used in the ordinary gas burner operating 'in conjunction with an air mixing chamber, would result in a short red flame of much lower temperature and which would only partially consume the gas issuing from1 the burner. By providing a plurality of apertures 3 along each of the arcuate arms 2 a large number of very hot llames' are produced Within a relatively small area immediately under the element to be heated, thereby causing the element to he quickly heated with a minimum consumption of fuel.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is,

1. A gas burner comprising a plurality of arms each having a plurality of restricted apertures; a ring mounted around a the burner arms and adapted toy receive an 'kelement to be heated; a reflector mounted be,-

low the arms and ring and having its upper edge in slightly spaced relation to the lower edge of the ring to form` an annular air passage around the burner arms; and a valve controlling the passage ot' gas to the burner arms whereby gas from a source of supplymay be caused to issue from the restricted apertures in the arms without prior admixture with around the. element toy be heated, the com bustion of said gas being supported by air admitted around` the burner arms only through the passage between the reflector and the ring.

2. A gas burner comprising a. plurality of arms each having a plurality of restricted apertures; a closed passage for directingr gas from a source ot supply directly through said apertures; a supporting element mount edarouud the burner arms to support au elev ment tobeA heated above the arms; and a concalye reflector mounted below the burner arms and spaced below the supporting element to form an air passage to admit air around the burner arms to combine with and support combustion of burner arms, said reflector being adapted to reflect heat upwardly from below the burner.

3. A gas burner comprising a plurality of arms each having a plurality of restricted apertures; a closedv passage for directing gas from a source of Asupply directly through said apertures without previous admixture with air; a supporting element mounted around the burner arms to support an element to be heated above the arms; a reflector mounted below the burner arms and spaced from the supporting element to form an air passage Wherebyair is admitted around the burner'arms to combine with and support combustion of the gas above the burner arms; and a pilot/burner connected to the source of gas supply and opening iin mediately above the burner arms for ignitingthe gas when the supply is turned on.

In witness whereof nature.

CARL HARTMANN.

air for burning below and the gas above the I hereunto set my sig-, 

